Hello, I'm trying this here first before moving to the apache list. Maybe someone of you use mod_authnz_ldap with multiple ldap servers declaration for redundancy. With one server declared it is working. Here is what I've tried for adding another one (space separated as read in the apache's doc) : .... AuthLDAPURL ldaps://ldap1.example.com/ou=People,dc=example,dc=com?uid??(businessCategory=foo) ldaps://ldap2.example.com/ou=People,dc=example,dc=com?uid??(businessCategory=foo) .... Result: Syntax error on line 43 of /etc/httpd/conf.d/trac.conf: Invalid LDAP connection mode setting: must be one of NONE, SSL, or TLS/STARTTLS Second test with quotes (as seen with some googling): .... AuthLDAPURL "ldaps://ldap1.example.com/ou=People,dc=example,dc=com?uid??(businessCategory=foo) ldaps://ldap2.example.com/ou=People,dc=example,dc=com?uid??(businessCategory=foo)" .... Result: Syntax error on line 43 of /etc/httpd/conf.d/trac.conf: Bad URL encountered while parsing LDAP URL. I've also tried to quote each ldap's declaration. No go. Can someone show me the clean way to achieve this ? Thanks, kfx.